package com.xjx.service.Impl;

import com.alibaba.dubbo.config.annotation.Reference;
import com.xjx.dao.RoleDao;
import com.xjx.dao.UserDao;
import com.xjx.pojo.Permission;
import com.xjx.pojo.Role;
import com.xjx.pojo.User;
import com.xjx.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

/**
 * @Version v1.0
 * @ClassName:
 * @Description:
 * @Author:xjx
 */
@Service
public class SpringSecurityUserService implements UserDetailsService {
    @Reference //注意：此处要通过dubbo远程调用用户服务
    private UserService userService;

        //根据用户名查询用户信息
        public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
            //远程调用用户服务，根据用户名查询用户信息
            User users = userService.findByUsername(username);
            if(userService == null){
                //用户名不存在
                return null;
            }
            List<GrantedAuthority> list = new ArrayList<>();
            Set<Role> roles = users.getRoles();
            for(Role role : roles){
                //授予角色
                list.add(new SimpleGrantedAuthority(role.getKeyword()));
                Set<Permission> permissions = role.getPermissions();
                for(Permission permission : permissions){
                    //授权
                    list.add(new SimpleGrantedAuthority(permission.getKeyword()));
                }
            }

            UserDetails userDetails = new org.springframework.security.core.userdetails.User(username, users.getPassword(), list);
            return userDetails;
        }

}
